David S Buzby
CIK 1244203 · See Remarks · last filed 2026-08-11
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
STEM price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| STEM | Director | 12,301 | $3.01 | $37.0K | -$1.97M | 22 | 2026-08-11 |
| Spring Valley Acquisition Corp. II (SVIIW) Delisted | Director | 40,000 | $1.66 | $66.4K | $0 | 1 | 2024-01-29 |
Recent Filings · Page 3 of 5
45 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2022-04-29 | STEM | Exer (M) | +5,524 | $0 | EDGAR |
| 2022-03-09 | STEM | Sell (S) | −86,121 | -$776.0K | EDGAR |
| 2021-07-09 | STEM | Mixed | +213,322 | -$61 | EDGAR |
| 2021-07-06 | STEM | Grant (A) | — | $0 | EDGAR |
| 2014-12-10 | — | Disp (D) | −123,835 | $0 | |
| 2014-12-09 | — | Mixed | — | -$544.0K | |
| 2013-01-31 | — | Grant (A) | +10,000 | $0 | |
| 2012-12-17 | — | Mixed | +4,500 | $87.0K | |
| 2012-11-28 | — | Sell (S) | — | $0 | |
| 2012-05-09 | — | Buy (P) | — | $0 |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.